OnStart not working as intended

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Posted on by Aurora

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Hi all,

I have an app with the ability to view how many requests have been made from the app, as well as how many are Pending, Accepted, or Rejected. I have a few labels that update and show the active number of items in each status, but I cannot properly get the labels to start with the right values when the app starts. I've tried using Set(varFilter, "") in the OnStart property, but this hasn't worked.

Does anyone have any idea how I might set the variable when the app starts so the users see the right number of submissions?

the labels

the formula in a button that sets the labels to what I want

Thanks for the help!

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Using Apps Using Formulas

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BCLS776 8,990 Moderator on at

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Re: OnStart not working as intended

Are you trying to set a variable that will later have a numeric value? If so, try setting it to 0 instead of "" (which sets it to an empty string).

Hope that helps,

Bryan

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Aurora 364 on at

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Re: OnStart not working as intended

@BCLS776

I use Set(varFilter, "") on a button that displays all the requests. I use UpdateContext({varFilter:"Pending"}), UpdateContext({varFilter:"Rejected"}), and UpdateContext({varFilter:"Approved"}) on different buttons to filter the requests. I would like my start page to do what my button that shows everything does when the app starts up.

Did I do a better job explaining?

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BCLS776 8,990 Moderator on at

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Re: OnStart not working as intended

@Aurora wrote:

@BCLS776

I use Set(varFilter, "") on a button that displays all the requests. I use UpdateContext({varFilter:"Pending"}), UpdateContext({varFilter:"Rejected"}), and UpdateContext({varFilter:"Approved"}) on different buttons to filter the requests. I would like my start page to do what my button that shows everything does when the app starts up.

Did I do a better job explaining?

Ah, that helps me understand better. The issue is probably due to mixing the use of global and context variables. A variable created/edited with UpdateContext() only exists on that screen. Variables created with Set() exist globally throughout the app. If you move your code out of OnStart and onto the OnVisible property of your screen, then you can use UpdateContext() to successfully assign its initial value.

Alternatively, if you need the scope of the variable to be global throughout the app, then use the Set() function to initialize and change the variable in all locations.

Hope that helps,

Bryan

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